Getting started with the HelloEpsilon GC class

Let's write a HelloEpsilon class and execute it using Epsilon GC. Here's the sample code:

class HelloEpsilonGC { 
    public static void main(String[] args) { 
        System.out.println("Hello to Epsilon GC!"); 
    } 
} 

To execute the preceding code using Epsilon GC, you must use the -XX:+UnlockExperimentalVMOptions option with the -XX:+UseEpsilonGC option, followed by the class to execute:

    >java -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC 
    HelloEpsilonGC
  

The following screenshot highlights the preceding command at the top; the remaining part includes the GC output:

As highlighted in the preceding screenshot, the following describes the GC output:

• JVM uses the Epsilon GC
• It outputs the Hello to Epsilon GC! string to the standard output
• It includes just one allocation of 792 KB

The literal...